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Proceedings Paper

Performance and early science with the Subaru Coronagraphic Extreme Adaptive Optics project
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Paper Abstract

We describe the current performance of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument on the Subaru telescope on Maunakea, Hawaii and present early science results for SCExAO coupled with the CHARIS integral field spectrograph. SCExAO now delivers H band Strehl ratios up to ~0.92, extreme AO corrections for optically faint stars, and planet-to-star contrasts rivaling that of GPI and SPHERE. CHARIS yield high signal-to-noise detections and 1.1—2.4 micron spectra of benchmark directly-imaged companions like HR 8799 cde and kappa And b that clarify their atmospheric properties. We show how spectra and astrometry for kappa And b lead to a reevaluation of this object's nature. Finally, we briefly describe plans for a SCExAO-focused direct imaging campaign to directly image and characterize young exoplanets, planet-forming disks, and (later) mature planets in reflected light.

Paper Details

Date Published: 9 September 2019
PDF: 16 pages
Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111170X (9 September 2019); doi: 10.1117/12.2529689
Show Author Affiliations
Thayne Currie, NASA Ames Research Ctr. (United States)
Subaru Telescope, NAOJ (United States)
Olivier Guyon, Subaru Telescope, NAOJ (United States)
Julien Lozi, Subaru Telescope, NAOJ (United States)
Tyler Groff, NASA Goddard Space Flight Ctr. (United States)
N. Jeremy Kasdin, Princeton Univ. (United States)
Frantz Martinache, Observatoire de la Côte d'Azur (France)
Timothy D. Brandt, Univ. of California, Santa Barbara (United States)
Jeffrey Chilcote, Univ. of Notre Dame (United States)
Christian Marois, NRC - Herzberg Astronomy & Astrophysics (Canada)
Univ. of Victoria (Canada)
Benjamin Gerard, Univ. of Victoria (Canada)
Nemanja Jovanovic, Caltech (United States)
Sébastien Vievard, Subaru Telescope, NAOJ (United States)

Published in SPIE Proceedings Vol. 11117:
Techniques and Instrumentation for Detection of Exoplanets IX
Stuart B. Shaklan, Editor(s)

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